McDonaldland was the fictional setting that grouped Ronald McDonald, Grimace, and the Hamburglar in McDonald's advertising.
McDonald's developed McDonaldland as a colorful fantasy world for commercials, promotions, and related merchandise. Its characters represented different parts of the restaurant experience or created comic adventures around hamburgers, fries, drinks, and other menu imagery.
Ronald McDonald served as the central humanlike mascot, while Grimace and the Hamburglar supplied contrasting personalities. Other characters included Mayor McCheese and Birdie the Early Bird, expanding the setting into a recognizable cast rather than a collection of unrelated advertisements.
McDonaldland is often confused with the name of a restaurant or children's play area. It was primarily a branded fictional universe used in marketing, although McDonald's restaurants and promotional products sometimes incorporated its imagery.